First off; include problems with the new class; I solved this by editing the .pro file and adding in all the locations where there are headers. This is a nasty hack and it should be changed later. Second - the new class is purely a learning class. I'm just messing around and getting a feel for Qt's model/view system. I'll probably discard it or refactor the heck out of it later, so don't get too attached to it.
Still learning more. I'm working on allowing selections from the left side list, and displaying them properly on the right. Beginning to have doubts as to the original design, since it didn't really follow the model/view, uh, model that qt encourages. Well, it's a learning project! (and I'm definitely doing that...).
Commit and merge before refactoring.